Problem with GPS commands

I am using EC 21EFA module
I get an error in response to all commands
where is the problem from ?
Do I need to update the firmware?

Hello Jackafshari, thanks for your question
Before you obtain GPS data, you should make sure the GNSS antenne is connected well and GNSS turns on. Here is the application note document you can reference, thank you.

Quectel_EC2x&EG9x&EG2x-G&EM05_Series_GNSS_Application_Note_V1.3.pdf (646.0 KB)